Animals & Wildlife Magazine

Featured Animal: Oyster

By Azanimals @azanimals
Oyster The oyster is a sessile (immobile) mollusc that is commonly found clinging onto shipwrecks, debris and harbour walls around the world. Oysters are bivalve molluscs meaning that they are closely related to other animals such as scallops, clams and mussels.

Oyster Oysters are found in salt water environments all around the world but are more commonly found in more temperate regions where the shallows are richer in nutrients. Oysters are thought to be among the oldest animals on the planet although their exact evolutionary path remains unclear.

As with other molluscs, oysters filter water in and out of their protective shells so that their vulnerable bodies inside are never put in danger. The hard shell of the oyster is primarily made up from calcium.

Despite there being numerous different species of oyster, oysters are generally split up into four distinct groups, which are true oysters (the ones eaten by humans), pearl oysters (produce pearls), thorny oysters (also known as spiny oysters) and saddle oysters (have very thin shells).

Oysters are filter-feeders so collect their nutrients by taking in water and their gills filter and collect food that the stomach then digests, dispersing the remaining water out of it's shell. Oysters are thought to be able to process up to 10 litres of water an hour so can vary in quality depending on the quality of the water.

Due to their small size and the fact that they don't move once they are adults, oysters are preyed upon by numerous different predators both in the sea and on the land. Humans, birds, marine mammals, sea turtles and various species of fish all prey upon the oyster.

Oysters have varying methods of reproduction. as some oyster species are hermaphrodites and some have separate sexes. Female oysters release millions of eggs into the water, where fertilization occurs externally. The oyster larvae develop within a matter of hours, and spend their first few weeks swimming around until they finally settle and attach themselves to objects, where they remain for the rest of their lives.

Today, although now commercially farmed, wild oysters are becoming rarer mainly due to increasing levels of pollution. Although many oysters have adapted to life in poor quality water, they are not as healthy as those oysters that are filtering water that is chemical-free.

You Might Also Like :

Back to Featured Articles on Logo Paperblog

These articles might interest you :

  • ✔628 Cougar Park

    ✔628 Cougar Park

    Steeton AFC 1-0 AFC BlackpoolNWCL First Division NorthSaturday 18th August 2018Steeton is a small village in the Metropolitan District of Bradford in West... Read more

    7 hours, 29 minutes ago by   Smidrophenia
  • 2018 NEW SONG: Olamide – Puna (Freestyle)

    Get brand new music from Nigerian music star Olamide – Puna (Freestyle) out now! Here is a quick music piece from YBNL boss Olamide and it’s titled Puna... Read more

    7 hours, 36 minutes ago by   Naijapary
  • Oyo State Governor, Ajimobi Demolishes Ayefele’s N800m Music House (Photos)

    The Government of Oyo state has carried out its threat to demolish the headquarters of Ibadan based radio station, popularly called Music station, Fresh FM owne... Read more

    8 hours, 2 minutes ago by   Naijapary
  • 5 Random Things to Make You Smile

    Random Things Make Smile

    Whoo hoo! We just got back from Wisconsin Dells (again…) but this time we had a blast with my son and his family. Aren’t they so CUTE?! Read more

    8 hours, 54 minutes ago by   Maryjo
  • Press Statement Released by Newly Elected Pro of Nanc Osun Axis

    NATIONAL ASSOCIATION OF NIGERIAN COMRADES (NANC) Association Nationale des Camarades Nigérians OSUN STATE AXIS APPRÉCIATÍON To God alone be all the glory;... Read more

    9 hours ago by   Naijapary
  • The Great Australian Road Trip

    To celebrate my graduation, we decided to travel across Australia. What better way to do that if not by road? For a second we considered taking a RV but... Read more

    11 hours, 14 minutes ago by   Prachipreaches
  • New Resource Available About Brown Hyaenas on Private Land

    Resource Available About Brown Hyaenas Private Land

    By Katy Williams A wide variety of species rely on land outside of protected areas for their survival. One example is the brown hyaena. Brown hyaenas are only... Read more

    11 hours, 19 minutes ago by   Iratemonkey